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AMOS STOCKER, OF WATERTWN, NEW YORK. Letters Patent IVO. 70,9I5, dated.November 12, 1867.

IMPROVBD VENTILATING DEVICE FOR BOOTS AND SHOES.

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TO ALL WHOM IT MY GONOERN Be it known that I, AMoS STOCKER, ofWatertown, in the county of Jeii'erson, in the State of NewYork, vhaveinventeda new and improvedManner of Ventilating Boots and Shoes; and Ido hereby declare that the following is a full and. exact descriptionthereof, reference being had to the accompanying drawings, and to theletters ofreference marked thereon. v

The nature of my invention consists in providing the toe of a boot or.shoe with a valve, lso that in walking or pressing the foot down, theair will be forced outside through the valve, which prevents it fromvreturning to inside ot' boot again. I also provide an extra insole fromtoe back to the shank, where it is secured, (after a number of springshave been inserted between it and the regular insole towards the toe,)the use of which is to help throw up the foot against the upper leather,(where a goed dea-l of ventilation is necessary,) forming a.

larger vacuum and a more perfect ventilation.

To enable others skilled in the art to make and uso my invention, I willproceed to describe its construction and operation, I

I make the boot or shoe as they are generally made. I then take a pieceof brass or othermaterial, (such as gutta perche. or rubber,) and formit about the shape ofa rivet, the head being about a half in ch indiameter across the head, and the stem I make about one-fourth of aninch in diameter and nearly one-fourth inch long. I then cut a tinethread (such as are cut on screws) on the steunend drill a hole throughthe centre, from small end up through centre of h'ead, as seen inFigures 1 and 2. I thenform a cap or cover about one-fourth inch high,(with a screw-.thread cut on the inside about halfway up,) the sizesuitable to screw on over figs. 1 and 2, having air-holes through insideat covered ond, with a ange formed as close to covered end as possible,about one-eighth of one inch wide, and just below-the air-escape hole orholes, (see a perspective view of bottoni, Figure 3, and side andupright views, Figure 4.) I then take the hollow rivet, beforedescribed, and screw it into cap, iig. 4, as seen in Figure 5.Theilanges are used forthe purpose of holding the'upper leather securelybetween them, as in figs. 1 and 4 andare screwed togetherin the toe ofboot or shoe, (see'Figure 6.) Ithen form a portion of nn insole, fromleather or other material, from the toe tothe shank. The end toward theheel is shaved to a thinedge when made oi' thick leather', so as not tohurt the foot. (I think some of using some kind of spring metal insteadof the leather, In that case I shall notuse the spiral springs.) I thensecure a number of small spiral springs, so made as to shut down, sothat there will only be one thickness of wire between the two'soles. Thesprings are so placed between the two soles, near enough together so asnot to form bunches under the foot. I then fasten the thin end oi soleto shank in any of the known ways, (see iig. 6, letter The springs I usefor the purpose of forcing up the ball of the foot, thereby causing amore perfect vacuum or a larger one. This extra insole is notindispensable, because some will not require any more ventilation thanthe instrumentwith its valve, secu in g. 5, and on toe of boot, iig. 6.I also take a thin piece of rubber, quite smooth, and of a suitable sizeto act as a valve, on small end of hollow rivet, (see tig. 2, letter B,)after which it is screwed up into fig. 4, (see gS. 5 and 6.)

I did ohtnin'Letters Patent in September, 1864, No. 44,467; but Ichanged the air in a boot or shoe by means of a bellows placed under thefoot; but this invention is used so as to force the' air out from thefoot through one valve. i

What I claim as my invention, and desire to secure by Letters Patent, is

1. The instrument seen in gs. 5 and 6, letter 0,' in combination withaboot or shoe.

2. I also claim the extra insole, with its spring or springs, incombination with the va1ve, as seen in iig. 6, letter C, substantiallyas described and for the purposes set forth in the specification.

Witnesses:

Lrsson, i W. F. RAND.

